I have Ubuntu 16.04 LTS with mate desktop. I installed DraftSight 2018 sp2 for Ubuntu with these instructions:

https://www.3ds.com/products-services/draftsight-cad-software/free-download/

Before the install I disabled virus scanners.

I downloaded deb file for ubuntu in installed it with

sudo dpkg -i draftSight.deb

Installation went without any errors.

When I start the DraftSight it asks activation. I fill all fields and press "activate" and then after few secods the DraftSight crashes probably before sending any email.

When I started DraftSight on console and tried activation, it did not print anything on console before crash.

No activation key was received from DraftSight/Solidworks.

How can I fix this issue? Are there any packages that need to be installed before installing DraftSight?
Thank you for your support.